From adress must match the smtp clients DNS domain

[Curtis Maurand]

On my system this is done with postfix.

smtpd_recipient_restrictions = permit_sasl_authenticated,
                                permit_mynetworks,
                                reject_unauth_destination,
                                reject_invalid_hostname,
                                ...


smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,
                           reject_invalid_helo_hostname,
                           reject_non_fqdn_helo_hostname,
                           reject_unknown_helo_hostname


Statistics since Sunday.

104 messages blocked by rbl zen.spamhaus.org

33 messages blocked by rbl  bl.spamcop.net

21 messages blocked by rbl  b.barracudacentral.org

211 messages quarantined by amavis

210 messages blocked by amavis

3635 blocked by no reverse DNS


Hope this helps,
Curtis

On 6/16/2016 8:18 AM, Gerhard Rappenecker wrote:
> Hi all,
>
> I want to reject mails from some smtp clients specified by IP or subnet, if the from address don't match the clients DNS Domain.
> Can anyone help me?
>
> My environment:
> postfix 2.11.6
> amavisd-new-2.8.1
>
> I allready posted this message yesterday but it seems something went wrong
>
> Regards
> Gerhard
>
>
>

-- 
Curtis Maurand
curtis at maurand.com <mailto:curtis at maurand.com>
207-252-7748
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